Pub Date : 2023-10-04DOI: 10.1080/00288330.2023.2264226
Kelly M. Jamieson, Ian C. Duggan
We analysed internal dispersal of zooplankton by waterbirds (endozoochory) in New Zealand, quantifying zooplankton eggs in faecal droppings collected at two lakes, Lake Rotoroa (Hamilton) and Lake Rotorua. Sixty-seven faecal droppings were collected from Mallard Ducks (20), Canada Geese (11), Greylag Geese (6), Black Swans (20) and Australian Coots (10). Fifty eggs were found, with a mean of 0.75 eggs per dropping, indicating that waterbirds consume zooplankton eggs, and that these pass through the digestive system. No significant difference was observed in the abundance of eggs among waterbird species, and no eggs hatched in the laboratory. Our results suggest that waterbird dispersal of zooplankton in New Zealand is occurring, but numbers being transported are low. Further, as non-native waterbirds such as mallard ducks and geese do not migrate in New Zealand to the extent they do elsewhere, they are likely not primary vectors for zooplankton dispersal.
{"title":"A preliminary investigation of zooplankton diapausing eggs from waterbird faecal droppings in New Zealand","authors":"Kelly M. Jamieson, Ian C. Duggan","doi":"10.1080/00288330.2023.2264226","DOIUrl":"https://doi.org/10.1080/00288330.2023.2264226","url":null,"abstract":"We analysed internal dispersal of zooplankton by waterbirds (endozoochory) in New Zealand, quantifying zooplankton eggs in faecal droppings collected at two lakes, Lake Rotoroa (Hamilton) and Lake Rotorua. Sixty-seven faecal droppings were collected from Mallard Ducks (20), Canada Geese (11), Greylag Geese (6), Black Swans (20) and Australian Coots (10). Fifty eggs were found, with a mean of 0.75 eggs per dropping, indicating that waterbirds consume zooplankton eggs, and that these pass through the digestive system. No significant difference was observed in the abundance of eggs among waterbird species, and no eggs hatched in the laboratory. Our results suggest that waterbird dispersal of zooplankton in New Zealand is occurring, but numbers being transported are low. Further, as non-native waterbirds such as mallard ducks and geese do not migrate in New Zealand to the extent they do elsewhere, they are likely not primary vectors for zooplankton dispersal.","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1080/00288330.2023.2256685
Jacob Nepper-Davidsen, Marie Magnusson, Christopher R. K. Glasson, Rebecca J. Lawton
The native kelp Ecklonia radiata is a target species for the emerging seaweed aquaculture industry in New Zealand, however, the effect of line configuration on survival and growth of farmed seaweed is unknown. In this study, we outplanted nine seaweed growth lines (with 20 individuals each) in three line configurations (vertical, horizontal 2 m depth, and horizontal 4 m depth) in northern New Zealand for grow-out between August 2021 and April 2022. Initial survival rates were similar between line configurations, but only individuals growing on vertical lines survived after four months (38% ± 12 SD). Similarly, on vertical lines, average juvenile growth by elongation was 85% higher (0.11 cm day−1 ± 0.03 SD) and maximum average weight of individuals was 77% higher (106 g WW ± 73 SD), compared to horizontal lines. Unusually warm water temperatures were likely a central driver for the overall high mortality of E. radiata observed from January to April, while a combination of temperature and light stress was likely a central driver for higher mortality observed on vertical lines at shallow depths compared to deeper depths. In conclusion, this study supports farming E. radiata on vertical dropper lines rather than horizontal lines.
本地海带Ecklonia radiata是新西兰新兴海藻养殖业的目标物种，然而，线配置对养殖海藻的生存和生长的影响尚不清楚。在这项研究中，我们在新西兰北部种植了9条海藻生长线(每条20个个体)，分为三种线配置(垂直、水平2米深和水平4米深)，在2021年8月至2022年4月期间生长。不同株系的初始存活率相似，但只有垂直株系的个体在4个月后存活(38%±12 SD)。同样，与水平线相比，在垂直线上，幼鱼的平均伸长生长高85% (0.11 cm day−1±0.03 SD)，最大平均体重高77% (106 g WW±73 SD)。异常温暖的水温可能是1月至4月观测到的辐射E.总体高死亡率的主要驱动因素，而温度和光照胁迫的结合可能是在浅深度垂直线上观测到的比深深度更高的死亡率的主要驱动因素。综上所述，本研究支持在垂直垂线上而不是在水平垂线上进行放养。
{"title":"Line configuration and farming depth markedly affect survival and growth in the kelp <i>Ecklonia radiata</i>","authors":"Jacob Nepper-Davidsen, Marie Magnusson, Christopher R. K. Glasson, Rebecca J. Lawton","doi":"10.1080/00288330.2023.2256685","DOIUrl":"https://doi.org/10.1080/00288330.2023.2256685","url":null,"abstract":"The native kelp Ecklonia radiata is a target species for the emerging seaweed aquaculture industry in New Zealand, however, the effect of line configuration on survival and growth of farmed seaweed is unknown. In this study, we outplanted nine seaweed growth lines (with 20 individuals each) in three line configurations (vertical, horizontal 2 m depth, and horizontal 4 m depth) in northern New Zealand for grow-out between August 2021 and April 2022. Initial survival rates were similar between line configurations, but only individuals growing on vertical lines survived after four months (38% ± 12 SD). Similarly, on vertical lines, average juvenile growth by elongation was 85% higher (0.11 cm day−1 ± 0.03 SD) and maximum average weight of individuals was 77% higher (106 g WW ± 73 SD), compared to horizontal lines. Unusually warm water temperatures were likely a central driver for the overall high mortality of E. radiata observed from January to April, while a combination of temperature and light stress was likely a central driver for higher mortality observed on vertical lines at shallow depths compared to deeper depths. In conclusion, this study supports farming E. radiata on vertical dropper lines rather than horizontal lines.","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136315014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-13DOI: 10.1080/00288330.2023.2245770
Finnley W. R. Ross, Dana E. Clark, Olga Albot, Anna Berthelsen, Richard Bulmer, Josie Crawshaw, Peter I. Macreadie
ABSTRACTThe scale at which New Zealand is currently storing and sequestering blue carbon, and could create additional blue carbon via restoration, has been unclear. Here, we calculate a preliminary estimate for the current extent of three key blue carbon ecosystems (saltmarshes, mangrove forests and seagrass meadows), their carbon stocks and their carbon sequestration rates using the best available data to provide a preliminary estimate of blue carbon in New Zealand. We also use local examples to explore opportunities to create additional blue carbon. Based on the available literature, we estimate the current extent of New Zealand’s blue carbon ecosystems to be 76,152 ha, which is 1.0% of the area of terrestrial native forests. Our preliminary estimate of New Zealand’s blue carbon stock is 2.66–3.76 Mt of carbon, with a current carbon sequestration rate of 0.12 (0.05–0.26) Mt/CO2/yr, which is equivalent to 0.16% of New Zealand’s 2021 gross emissions. Restoration of saltmarshes could enhance their carbon sink capacity, mangrove forests are naturally expanding and seagrass meadow restoration techniques at scale are still in development. Developing a national framework for blue carbon protection, monitoring and restoration is important as part of New Zealand’s climate change mitigation and adaptation efforts.KEYWORDS: Climate changeblue carbonsaltmarshseagrassmangroverestorationconservationcarbon sequestrationtidal marshNew Zealand AcknowledgementsThis project was supported by Deakin University and Sea Green Pte Ltd. PIM thanks the support of an Australian Research Council Discovery Project (DP200100575). AB and DEC thank support from the Cawthron Institute. RB acknowledges support from MBIE Smart Idea project (Carbon sequestration via New Zealand’s estuarine environments: Implications for greenhouse gas budgets – C01X2109). OA acknowledges the support from MBIE, GNS Science and the Antarctic Research Centre, Victoria University of Wellington. We would also like to acknowledge Micheli Costa for assistance with Figure 1 and Helen Kettles for helping retrieve data.Author contributionsThe idea for the manuscript was conceived by FR who organised and directed the writing of the manuscript. All other authors contributed to the writing and editing of the manuscript.Competing financial interestsFR works for Carbonz (New Zealand business number: 9429049537871). Carbonz trades voluntary carbon credits in New Zealand however is currently not trading blue carbon credits. The other authors declare no competing financial interests.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Deakin University; Sea Green Pte Ltd.; Cawthron Institute; Australian Research Council Discovery Project [grant number DP200100575]; MBIE Smart Idea Project [grant number C01X2109]; MBIE through the Global Change through Time Programme (Strategic Science Investment Fund, contract C05X1702); NZ SeaR
{"title":"A preliminary estimate of the contribution of coastal blue carbon to climate change mitigation in New Zealand","authors":"Finnley W. R. Ross, Dana E. Clark, Olga Albot, Anna Berthelsen, Richard Bulmer, Josie Crawshaw, Peter I. Macreadie","doi":"10.1080/00288330.2023.2245770","DOIUrl":"https://doi.org/10.1080/00288330.2023.2245770","url":null,"abstract":"ABSTRACTThe scale at which New Zealand is currently storing and sequestering blue carbon, and could create additional blue carbon via restoration, has been unclear. Here, we calculate a preliminary estimate for the current extent of three key blue carbon ecosystems (saltmarshes, mangrove forests and seagrass meadows), their carbon stocks and their carbon sequestration rates using the best available data to provide a preliminary estimate of blue carbon in New Zealand. We also use local examples to explore opportunities to create additional blue carbon. Based on the available literature, we estimate the current extent of New Zealand’s blue carbon ecosystems to be 76,152 ha, which is 1.0% of the area of terrestrial native forests. Our preliminary estimate of New Zealand’s blue carbon stock is 2.66–3.76 Mt of carbon, with a current carbon sequestration rate of 0.12 (0.05–0.26) Mt/CO2/yr, which is equivalent to 0.16% of New Zealand’s 2021 gross emissions. Restoration of saltmarshes could enhance their carbon sink capacity, mangrove forests are naturally expanding and seagrass meadow restoration techniques at scale are still in development. Developing a national framework for blue carbon protection, monitoring and restoration is important as part of New Zealand’s climate change mitigation and adaptation efforts.KEYWORDS: Climate changeblue carbonsaltmarshseagrassmangroverestorationconservationcarbon sequestrationtidal marshNew Zealand AcknowledgementsThis project was supported by Deakin University and Sea Green Pte Ltd. PIM thanks the support of an Australian Research Council Discovery Project (DP200100575). AB and DEC thank support from the Cawthron Institute. RB acknowledges support from MBIE Smart Idea project (Carbon sequestration via New Zealand’s estuarine environments: Implications for greenhouse gas budgets – C01X2109). OA acknowledges the support from MBIE, GNS Science and the Antarctic Research Centre, Victoria University of Wellington. We would also like to acknowledge Micheli Costa for assistance with Figure 1 and Helen Kettles for helping retrieve data.Author contributionsThe idea for the manuscript was conceived by FR who organised and directed the writing of the manuscript. All other authors contributed to the writing and editing of the manuscript.Competing financial interestsFR works for Carbonz (New Zealand business number: 9429049537871). Carbonz trades voluntary carbon credits in New Zealand however is currently not trading blue carbon credits. The other authors declare no competing financial interests.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Deakin University; Sea Green Pte Ltd.; Cawthron Institute; Australian Research Council Discovery Project [grant number DP200100575]; MBIE Smart Idea Project [grant number C01X2109]; MBIE through the Global Change through Time Programme (Strategic Science Investment Fund, contract C05X1702); NZ SeaR","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135784320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-06DOI: 10.1080/00288330.2023.2238637
C. Savage
{"title":"Coral reefs of Australia: perspectives from beyond the water’s edge","authors":"C. Savage","doi":"10.1080/00288330.2023.2238637","DOIUrl":"https://doi.org/10.1080/00288330.2023.2238637","url":null,"abstract":"","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47184038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.1080/00288330.2023.2230154
V. Mobilia, D. Tracey, V. Cummings, M. Clark, L. Woods, J. Bell
{"title":"Effects of sediment pulses on the deep-sea coral Goniocorella dumosa","authors":"V. Mobilia, D. Tracey, V. Cummings, M. Clark, L. Woods, J. Bell","doi":"10.1080/00288330.2023.2230154","DOIUrl":"https://doi.org/10.1080/00288330.2023.2230154","url":null,"abstract":"","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46052640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-24DOI: 10.1080/00288330.2023.2237422
Natalia Williams, A. Rizzo, R. Daga, Walter A. Alfonzo, S. Ribeiro Guevara
{"title":"Chironomidae responses to volcanic ash fall: a case study from Northern Patagonia for consideration in paleolimnological reconstructions","authors":"Natalia Williams, A. Rizzo, R. Daga, Walter A. Alfonzo, S. Ribeiro Guevara","doi":"10.1080/00288330.2023.2237422","DOIUrl":"https://doi.org/10.1080/00288330.2023.2237422","url":null,"abstract":"","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41679735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-23DOI: 10.1080/00288330.2023.2236034
F. G. Jara, P. Garcia, R. D. Garcia, J. Sganga, M. Pueta
{"title":"Which variables influence the structure and abundance of aquatic herbivorous assemblages in small forested Patagonian wetlands?","authors":"F. G. Jara, P. Garcia, R. D. Garcia, J. Sganga, M. Pueta","doi":"10.1080/00288330.2023.2236034","DOIUrl":"https://doi.org/10.1080/00288330.2023.2236034","url":null,"abstract":"","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45019237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-19DOI: 10.1080/00288330.2023.2235292
Grace Fortune-Kelly, Motia Gulshan Ara, T. Ingram
{"title":"Diet variation of common smelt across a salinity gradient in coastal lakes on Rēkohu (Chatham Island)","authors":"Grace Fortune-Kelly, Motia Gulshan Ara, T. Ingram","doi":"10.1080/00288330.2023.2235292","DOIUrl":"https://doi.org/10.1080/00288330.2023.2235292","url":null,"abstract":"","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44190993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-09DOI: 10.1080/00288330.2023.2230914
Su Khi Ng, Cher Chien Lau, M. P. Tan, Siti Azizah Mohd Nor, M. Danish-Daniel, N. Afiqah‐Aleng, Z. Muchlisin, N. Fadli
{"title":"Using a transcriptomic approach to understand poor growth performance in farmed orange-spotted grouper (Epinephelus coioides) larvae: a case study in a commercial hatchery","authors":"Su Khi Ng, Cher Chien Lau, M. P. Tan, Siti Azizah Mohd Nor, M. Danish-Daniel, N. Afiqah‐Aleng, Z. Muchlisin, N. Fadli","doi":"10.1080/00288330.2023.2230914","DOIUrl":"https://doi.org/10.1080/00288330.2023.2230914","url":null,"abstract":"","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42834880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-05DOI: 10.1080/00288330.2023.2228223
Camille G. Baettig, A. Barrick, M. Zirngibl, G. Lear, Kirsty F. Smith, G. Northcott, L. Tremblay
{"title":"Development and validation of molecular biomarkers for the green-lipped mussel (Perna canaliculus)","authors":"Camille G. Baettig, A. Barrick, M. Zirngibl, G. Lear, Kirsty F. Smith, G. Northcott, L. Tremblay","doi":"10.1080/00288330.2023.2228223","DOIUrl":"https://doi.org/10.1080/00288330.2023.2228223","url":null,"abstract":"","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46272670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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